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Thermodynamic Properties of Imidazolium-Based Ionic Liquids:  Densities, Heat Capacities, and Enthalpies of Fusion of [bmim][PF6] and [bmim][NTf2]

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posted on 14.09.2006, 00:00 by Jacobo Troncoso, Claudio A. Cerdeiriña, Yolanda A. Sanmamed, Luís Romaní, Luís Paulo N. Rebelo
Experimental densities, isobaric heat capacities, and enthalpies of fusion for one sample of 1-butyl-3-methylimidazolium hexafluorophosphate, [bmim][PF6], and two samples of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [bmim][NTf2], are reported. Data were obtained at atmospheric pressure and, in the case of the density and the heat capacity, within the temperature intervals (283.15 to 323.15) K and (278.15 to 333.15) K for [bmim][PF6] and [bmim][NTf2], respectively. A critical analysis of the effect of impurities on the measured thermodynamic properties is performed.

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